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Alter first vertical grid line in nvd3

I want to remove (or make effectively hidden) the first vertical line in the grid for an nvd3 chart. I thought it was a problem with my chart, but after testing it, I realized it seems to be a more general problem.
I tested it by running the line:
d3.selectAll('.tick, .nv-axislabel, .nv-axis text').attr('fill','#999999')
in the console, at the simplest line chart I could find: http://nvd3.org/examples/line.html and it still didn't work! It changes all the lines except the very first vertical line. I'm baffled, I've tried every combination of classes with stroke, fill, opacity, etc - I can either affect the entire svg (with opacity), or nothing. Anyone have any ideas?
EDIT:
I should have specified this originally, I apologize - I do not want to remove the Y axis entirely. I still need the label and the tick marks - I just want to remove that one vertical line (or at least lighten it - it is much darker than the rest of my chart).

Going by your comments:
You don't want to see the " the first vertical line in the grid for an nvd3 chart"
Which is the y axis:
Two ways to achieve that:
Option1
var chart = nv.models.lineChart()
.margin({left: 100}) //Adjust chart margins to give the x-axis some breathing room.
.useInteractiveGuideline(true) //We want nice looking tooltips and a guideline!
.transitionDuration(350) //how fast do you want the lines to transition?
.showLegend(true) //Show the legend, allowing users to turn on/off line series.
.showYAxis(false) //hide the y-axis
.showXAxis(true); //Show the x-axis
Option2:
Since in your example you are going for a CSS option
d3.selectAll('.nv-y').attr('display','none')
I will prefer Option1
EDIT post your clarification, you wish to make the y axis line light you can use:
d3.selectAll('.nv-y path').attr('opacity','0.1')
or if you want to hide it completely
d3.selectAll('.nv-y path').attr('display','none')

One solution is to specify an array of tick values that you want to use for each axis. Use axis.tickValues([values]) to explicitly declare which XAxis ticks you want for your graph. So you could pop .tickValues([1, 2, 3, 5, 8, 13, 21]); into either the chart.xAxis or the chart.yAxis, and ticks would only appear from the corresponding values in the array. In your case, you would want to put it in the chart.xAxis variable. However if you want to have a dynamic chart, explicitly declaring the tick values would pose a problem once the data is updated in the graph. If on the other hand you are using static data, this is a pretty easy fix. I've tested this solution in their live code editor and it seems to do the trick.
Refer to https://github.com/mbostock/d3/wiki/SVG-Axes#ticks to see some other directives that could be of use.

Chartjs extended doughnut with text tooltip issue

I am trying to build an extended doughnut in chartjs. I want to display the highest value as percent and its label in the middle. It works fine on load but breaks after an hover event. One a tooltip is being displayed something breaks the first draw event and move the text on the left and i can't figure how to solve this. I made a fiddle to describe this issue :
http://fiddle.jshell.net/3be5zb0v/
Any ideas on how to fix this ?

Working fiddle - http://fiddle.jshell.net/3be5zb0v/1/
Just add this before your fillText
thechart.textAlign = 'start';

Highstock - Tooltip doesn't work correctly with Range Selector

I have problem with Tooltip which doesn't reflects chart's data series. It shows 0 value at point where chart shows something different.
This is how it looks:
I've created JSFIDDLE which shows the problem.
To reproduce this you need to move Range selector to point shown on above charts. But be careful, you cannot stretch it. You need to click in the middle of Range Selector, otherwise it will work. If you do this correctly Your cursor will change to two-sided arrow.
And now the question time:
Is it bug in Highstock code or mine?

You can disable datagrouping then your points will be correct.
plotOptions:{
series:{
dataGrouping:{
enabled:false
}
}
},
http://jsfiddle.net/cy96hd4j/2/

Making circular label in d3js

I have been working on d3js charts and have made the cicular progress(the white arc that changes value smoothly).I haven't figure out how to make the label that changes according to the value of the arc.For example in the figure if the value of arc is more than 300 , the labels should update automatically.
.

Your code is almost there. To make it work, you basically need two changes. First, the circles and outer labels don't need to be redrawn on update, as they don't change. So I've moved the function call that does that out of the update function. Similarly, you don't need to append a new text element in the center of the circle to show the current progress, but just update the existing one.
Complete example here.

d3.js - blank object when applying y-axis scale

I'm trying to apply a scale to y-axis in my chart, but when I do it I get a blank svg object.
I did the same thing with the x-axis and it's working fine.
Problem happens when you uncomment this section
// .y(function(d) {
// return yScale(d[1])
// })
http://jsfiddle.net/MgwR5/1/
Could anyone tell me what I'm doing wrong?

The area functions are y0() and y1(), not y(). Ref: D3 API documentation

Have a look at the js bin. I've put a bunch of comments in that should help and I've assumed that you wanted a line chart.
If you want to put axis's on your chart you should be looking to use the d3.svg.axis function. It does most of the heavy lifting for you. You also need to make space for the axis try using some padding and margins (you might want to look at this example or the example on the js bin d3 page - use the link at the top of the google groups d3 page). You also probably want to separate out your axis's and your plot by using svg's group ('g').
Cheers